@media screen and (min-width:750px) {
  html{
    font-size: 75px!important;
  }
}
*{
  padding: 0;
  margin: 0;
  border: 0;
  box-sizing: border-box;
}
body{
  background-color: #f6f6f6;
  min-width: 320px;
  max-width: 750px;
  width: 10rem;
  margin: 0 auto;
  line-height: 1.5;
}
li{
  list-style: none;
}
a{
  text-decoration: none;
}